Christopher Alexander의 計劃思想과 韓國土俗建築에 바탕을 둔 空間言語의 開發을 爲한 硏究

최효승 淸州大學校 1985 論文集 Vol.18 No.2

주민참여에 의한 농촌마을 계획과정과 교훈 : 충북 제원군 금성면 사례 Learning from the Keumsong Project

최효승 청주대학교 새마을연구소 1989 새마을硏究論文集 Vol.6 No.-

This paper is a detailed process of a rural community design by the people for Keumsong-Myun, Chung-buk Province. The development plan for Keumsong-Myun was made by the community people with me in 1984. As a coordinate architect and planner, I used the C. Alexander's pattern language method in the project. Through this experimental project the effectiveness of the pattern language approach was proved as a good tool of user-participation planning. It is the hope of this paper to provide a valuable reference to architects and planners designing and planning communities with and by the people.

혈액투석 중인 만성 신부전 환자에서 G 형 간염 바이러스의 감염률 및 임상적 의의

최규완,백승운,김정룡,이준혁,고광철,이종철,이윤하,김윤구,오하영,이효석 대한소화기학회 1999 대한소화기학회지 Vol.33 No.1

Background/Aims: We aimed to elucidate the prevalence and risk factors of HGV infection in patients with chronic renal failure undergoing hemodialysis, and to define the potential etiologic-role of HGV in the development of chronic liver disease. Methods: One-hundred and seventy-eigh patients with chronic renal failure undergoing hemodialysis were included. After extraction of RNA from serum, reverse transcription polymerase chain reaction was performed using the primers from the NS5a region. The PCR products were analyzed by liquid hybridization. Results: The prevalence was 9.0% (16/178). The prevalence rates were not statistically different according to the presence (8.5%) or abscence (10.8%) of past history of blood transfusion, patient's age or maintenance duration of hemodialysis (p$gt;0.05). Anti-HBc-positive patients (12.4%, 16/129) showed significantly higher prevalence rate (p=0.01) of HGV infection than anti-HBc-negative patients (0%, 0/49). Twelve of the 14 HGV positive patients without co-infection showed persistently normal ALT level during a year of follow-up. Conclusions: The prevalence of HGV in patients with chronic renal failure undergoing hemodialysis is significantly higher than that of volunteer blood donors. HGV may share the route of transmission with adulthood HBV infection. The etiologic-role of HGV in the development of chronic liver disease may be considerably poor. (Kor J Gastroenterol 1999;33:78 - 89)

한계계단 응답특성을 이용한 영구자석형 동기전동기 속도제어

박승엽,전인효,최중경 창원대학교 공작기계기술연구센터 1999 연구업적집 Vol.1 No.1

본 논문에서는 한계계단 응답특성을 이용하여 영구자석형 동기전동기의 속도 제어계에 대한 새로운 자동 동조 PI(Proportional Integral)제어기를 설계하였다. 과도응답 기간동안 소위 한계입력이라고 하는 계단입력을 인가하여 PI 제어기의 자동동조를 위한 정보를 얻기 위한 기법을 제안한다. 시스템 파라메터 추정과 동시에 속도제어가 온라인으로 이루어지는데, 이것은 시스탬의 불확실성에도 불구하고 한계입력에 의해서 얻어진 시스템 파라메터 정보가 연속적으로 PI 제어기에 적용될 수 있다는 것이다. 제안된 자동동조 알고리즘은 단조증가 계단응답 특성을 갖는 영구 자석형 동기전동기의 속도제어에 대한 시뮬레이션과 실험결과를 통하여 그 유효함을 확인하였다. In this paper, a new auto-tuning PI controller for the speed servo system of a PMSM is designed by using limited step response characteristics. The method is proposed that gets information about auto-tuning of PI regulator by the injection fo step input, called limited input, during a transient response time of control. System parameter estimation and speed control could be continuously executed. This means that in despite of system uncertainty the system information obtained by limited input can be continuously applied to the PI regulator. We demonstrate the effectiveness of the proposed auto-tuning algorithm through simulation and experiment result of the speed control for a PMSM having monotone increasing step response.

경도관 동맥색전술을 이용한 비정상 자궁출혈의 치료

양승부,최교창,이상진,정영진,임한혁,한효상,황인철,조환성 순천향의학연구소 2005 Journal of Soonchunhyang Medical Science Vol.11 No.1

Objective : Our purpose of this study is to evaluate the effectiveness of the transcatheter arterial embolization for the management of abnormal uterine bleeding. Materials and Methods : 14 patients with massive or recurrent uterine bleeding underwent percutaneous transcatheter arterial embolization between February 2003 and September 2004. We reviewed 14 cases of uterine artery or internal iliac artery embolization using gelfoam or PVA particles. Results : Good management of uterine bleeding was achieved in 13 of 14(93%) cases. The cause of abnormal uterine bleeding was myoma(5 case), post D & E bleeding(3), acquired vascular malformation(3), pseudoaneurysm(1), adenomyosis(1), and endometrial hyperplasia(1). Conclusion : Transcatheter artery embolization is an effective and life-saving procedure in massive or recurrent uterine bleeding. Early diagnosis and prompt transcatheter arterial embolization is a useful mangement of uterine bleeding.

Enrofloxacin과 colistin의 복합제(Enroco)의 아급성 독성시험

윤효인,김민규,박승춘,장범수,이내경,최양웅 충남대학교 수의과대학 동물의과학연구소 1997 動物醫科學硏究誌 Vol.5 No.-

The study was carried out to evaluate toxicity of enrofloxacin and colistin complex (Enroco) with a dose of 10 ㎎/㎏/day, 20 ㎎/㎏/day and 40 ㎎/㎏/day via oral administration for 3 weeks in ICR mice. All procedures of the test were performed by the established regulation of Korean National Institute of Safety Research (1994. 4. 14). Appearance, behavior, mortality and food consumption of treated groups were not affected during the experimental periods. No significant does-related changes of the combined antibacterials were found in urinalysis, eye examination, hematology, serum chemistry, and organ weight. No histopathological lesions were observed in both control and treatment groups. Our results strongly suggested that no toxic changes were found in mice treated orally with enrofloxacin-colistin complex for 3 weeks.

GFRP 적층복합재료관의 신뢰성해석

조효남,이승재,최영민 한양대학교 공학기술연구소 1992 공학기술논문집 Vol.1 No.1

In general, the strength and stiffness of laminated composite cylindrical shells are very sensitive to the variation of slenderness parameters, some coupling-stiffness parameters, lamination angles, stacking sequence and number of lagers. In the paper, the effects of these factors on the strength and buckling reliabilities of GFRP laminated cyclindrical shells ale investigated based on the proposed strength and buckling limit state models. It may be concluded that the applicable ranges of the slenderness limits of the strength and buckling failure criteria for laminated composite cylindrical shells should be indentified and incorporated into the design formula with appropriate safety factors which provide uniform consistent reliability for balanced design in practice.

고분자압출성형용 Single-Screw에 관한 열유동 기초연구

정효희,김재열,고명석,최승현,심재기,한재호 한국공작기계학회 2008 한국공작기계학회 춘계학술대회논문집 Vol.2008 No.-

Extrusion Screw, point parts of extrusion molding extruder, is expanded widely use area with construction machinery, site conveyance device food processor, medicine as well as Polymer extrusion forming. Because this can expect large quantity demand about Screw of special quality of extrusion Screw item, is become processing industry that adopt all kinds of small quantity production type. Accordingly, analysis by extrusion screw is also consisting of several directions. Extrusion screw differentia is appeared much at material selection of screw itself and each screw design as parts that cause a lot of high temperature and high tension and attrition among processing of product and use purpose and that should do it so that working conditions back according to kind of used balance may optimize of each Screw are desirable. In this treatise, analyzed and analyze single-screw that is using developing in Human Resource Training Project for regional Innovation subject considering pressure, temperature etc.. of extrusion screw using CFdesign that is 3 dimensional analysis program.

전립선암의 색/출력도플러 경직장초음파검사 : Gleason 점수와의 비교 Correlation with Gleason Score

김효철,김승협,문민환,박병관,김건하,최혁재,윤창진 대한초음파의학회 2002 ULTRASONOGRAPHY Vol.21 No.3

토끼에서 enrofloxacin과 enrofloxacin acetate의 比較藥物動態學

윤효인,박승춘,김창식,김민규,최기섭,신광순,박종일,조준형,조명행 충남대학교 수의과대학 동물의과학연구소 1996 動物醫科學硏究誌 Vol.4 No.-

This study was designed to examine the in vitro antibacterial activities and pharmacokinetics of enrofloxacin acetate (ENFXA) and enrofloxacin (ENFX). Two enrofloxacins had wide spectrum antibacterial activities against Gram positive and negative bacteria, and mycoplasma, showing potent antibacterial activities with low MICs (0.05-3.33 ㎍/㎖ for Gram positives, 0.002 ㎍/㎖ for Gram negatives and 0.02 ㎍/㎖ for mycoplasma). In order to investigate the profiles of two formulations of enrofloxacin we studied comparative pharmacokinetics of them in rabbits. Five rabbits were given 5 ㎎/㎏ body weight of each enrofloxacin formulation intravenously (i.v.) and orally (p.o.) in a cross-over study. Pharmacokinetic parameters of both formulations were calculated by the use of PCNONLIN, a computer program. Their bioavailibility in rabbits, the means of the area under the curve (AUC). After oral administration of each formulation in rabbits, the mean elimination half-lives (t_1/2,ke) were 3.25h (ENFX) and 4.32 h (ENFXA), and mean AUC 4.27 ㎍·h/㎖ (ENFX) and 6.21 ㎍·h/㎖ (ENFXA). Both enrofloxacin formulations seemed to have good tissue distribution and penetration as indicated by large volume of distribution: 4.76 1/㎏ for ENFX and 7.23 1/㎏ for ENFXA. With the results obtained in this study, ENFXA could be used in place of ENFX in rabbits.